#div2 {
    width: 100%;
    max-height: 300px;
    overflow: hidden;
}

#div3 {
    text-align: center;
    position: absolute;
    left: 0;
    top: 200px;
    width: 100%;
    color: white;
    z-index: 999;
}

#div3 button {
    line-height: 30px;
    background: white;
    color: black;
    border: white;
}

#div41 table td {
    width: 300px;
    color: #696969;
    font-size: 20px;
}

#div42 table td {
    width: 150px;
}

.round_icon {
    width: 70px;
    height: 70px;
    display: flex;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#tab1 tr td:nth-child(1) {
    width: 40px;

}

#tab1 {
    border: 0 solid white;
}

#tab1 tr td:nth-child(2) {
    width: 200px;

}

.wrapper {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    width: 400px;
    margin: 50vh auto 0;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
}

/* Switch 2 Specific Style Start */
.switch_box {
    height: 50px;
    margin-top: 20px;
    font-size: 25px;
}

input[type="checkbox"].switch_2 {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 100px;
    height: 8px;
    background: #444;
    border-radius: 5px;
    position: relative;
    outline: 0;
    cursor: pointer;
}

input[type="checkbox"].switch_2:before,
input[type="checkbox"].switch_2:after {
    position: absolute;
    content: "";
    -webkit-transition: all .25s;
    transition: all .25s;
}

input[type="checkbox"].switch_2:before {
    width: 40px;
    height: 40px;
    background: #ccc;
    border: 5px solid #666;
    border-radius: 50%;
    top: 50%;
    left: 0;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
}

input[type="checkbox"].switch_2:after {
    width: 30px;
    height: 30px;
    background: #666;
    border-radius: 50%;
    top: 50%;
    left: 10px;
    -webkit-transform: scale(1) translateY(-50%);
    transform: scale(1) translateY(-50%);
    -webkit-transform-origin: 50% 50%;
    transform-origin: 50% 50%;
}

input[type="checkbox"].switch_2:checked:before {
    left: calc(100% - 35px);
}

input[type="checkbox"].switch_2:checked:after {
    left: 75px;
    -webkit-transform: scale(0);
    transform: scale(0);
}

.maintext {
    color: #ee6600;
}

.img-responsive {
    width: 100%;
    height: 400px;
    padding-bottom: 40%;
    background-color: #fef9ff; /*背景色*/
    overflow: hidden;

}

.img-responsive img {
    width: 100%;
    height: 100%;
}